Minute structure and information recording medium

(19)

(11)

EP 1 973 110 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	29.04.2009 Bulletin 2009/18

(43)	Date of publication A2:
	24.09.2008 Bulletin 2008/39

(21)	Application number: 08250934.0

(22)	Date of filing: 18.03.2008

(51)

International Patent Classification (IPC):

G11B 7/24^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

(30)

Priority:

19.03.2007 JP 2007071485
26.03.2007 JP 2007079482
27.04.2007 JP 2007120218
24.10.2007 JP 2007276730

(71)	Applicant: Ricoh Company, Ltd.
	Tokyo 143-8555 (JP)

(72)	Inventor:
	Mori, Tetsuji Yokohama-si, Kanagawa (JP)

(74)	Representative: Lamb, Martin John Carstairs
	Marks & Clerk LLP 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)

(54)	Minute structure and information recording medium

(57) There is disclosed a minute structure (104) including a sulfur compound and a silicon oxide.
There is also disclosed a write-once information recording medium including a substrate (101) and a recording layer formed of a mixed inorganic material and deposited on the substrate, wherein the mixed inorganic material contains a sulfur compound and a silicon oxide.

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